How much better would blender be if I upgraded my Ram?
Use a System Monitor or Task Manager tool or similar (eg, ‘top’ on Linux) to see if your system is using all of its memory when you’re doing a large, slow operation. If you still have free memory then that isn’t the bottleneck. If, however, the memory runs out and the system starts swapping to disk (known as “page faults” or “virtual memory swapping”) then you would benefit from adding more memory.